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ppmtorgb3 - separate a portable pixmap into three portable graymaps
ppmtorgb3 [ppmfile]
Reads a portable pixmap as input.
Writes three portable graymaps as output, one each for red, green, and
blue.
The output filenames are constructed by taking the input filename,
stripping off any extension, and appending ".red", ".grn", and ".blu". For
example, separating lenna.ppm would result in lenna.red, lenna.grn, and lenna.blu.
If the input comes from stdin, the names are noname.red, noname.grn, and
noname.blu.
rgb3toppm(1)
, ppmtopgm(1)
, pgmtoppm(1)
, ppm(5)
, pgm(5)
Copyright (C) 1991 by Jef Poskanzer.
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